I am a Chinese player. I can't speak English, so I use mechanical translation.

1.

When I played in Australia, the open pit mine was close to a strategic resource (oil and uranium in the picture) and did not increase the additional 50 productivity.   :(

2.When I was at war with the Mongolian civilization, sometimes when his army came to attack my city (land units were on board and attacked from the sea), they would move each ship in the first round, but there was no action near the coast. I think these ships at sea still have some mobility when they are close to the shore, but they won't defend this round, and they don't have enough mobility to get ashore. Then they stayed where they were and did nothing. Because this battle can't go to the next round.

3.Sometimes the administrative center or outpost disappears. This cell only has terrain. There is no picture because I met it but forgot to take it.